Table 1.
Mechanical Properties of CorMatrix Grafts and Swine LPA
| Conditioning Period | Samples | Young's Modulus (MPa) | Maximum Stress (MPa) | Strain at Rupture (%) |
|---|---|---|---|---|
| 7 days | Unseeded | 17.7±2.1 | 4.2±0.5 | 55±6 |
| Seeded | 13.2±2.6 | 2.4±0.3* | 56±4 | |
| 14 days | Unseeded | 15.5±2.1 | 4.2±0.6 | 69±1 |
| Seeded | 8.9±1.5* | 3.1±0.7 | 83±4* , † | |
| LPA | 0.55±0.07 | 0.28±0.09 | 151±12 |
Values are means±SE, N=4 biological replicates, each one with 3 internal replicates. LPA indicates left pulmonary artery.
*P<0.05 vs unseeded grafts within each time point; † P<0.01 vs corresponding group (seeded or unseeded) harvested at 7 days of conditioning in the bioreactor.